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After lots of repair, (seemingly) no spark or starter functionality

  • Thread starter Thread starter giganticflying
  • Start date Start date
81GS850 said:
You only have to hold the clutch in if the trans isn't in neutral.
Click to expand...
Nope, the Suzuki system wasn't that smart. You have to hold the clutch regardless of gear selection.

Unless you bypass the switch, of course, like many (most?) of us have done.

It's still a good idea to pull the clutch, but it won't be mandatory.

.
 
Killer2600 said:
The manual would be correct. Stock suzuki safety interlock works that way. My guess is 81GS850 has forgotten so many bypass the clutch switch interlock.
Click to expand...

Sorry, never been on a bike this old and being the bike is this old I'm sure the PO bypassed it at some point... My bad guys! :(
 
Benefits: It frees up your left hand, which can be important under certain situations.
Dangers: You had better be certain you are in neutral when you press the button.
 
Ok, made some progress! I was able to visually check for spark and they are all firing. With a little starting fluid (3/4 of a can) and some finagling I was able to get it to idle. But when I apply any throttle it kills the engine. I ran out of time today, but should I just need around with the fuel screws on the outside of the carbs? I'll make a post in the proper forum if needed.
 
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Throw that starter fluid away, there is enough ether in 3/4 of a can to completely wash any oil off the cylinder walls and rings and start scoring the cylinders.:nightmare: If the carburetors are cleaned properly, no vacuum leaks O-rings and boots replaced, spark, compression, valves and timing adjusted properly it starts without that trash you think is magic in a can.
 
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OldVet66 said:
Throw that starter fluid away, there is enough ether in 3/4 of a can to completely wash any oil off the cylinder walls and rings and start scoring the cylinders.:nightmare: If the carburetors are cleaned properly, no vacuum leaks O-rings and boots replaced, spark, compression, valves and timing adjusted properly it starts without that trash you think is magic in a can.
Click to expand...

Hey ether is all I run in my bikes ;)


Seriously though, did not know about the washing of cylinders. But I would imagine you'd have to POUR ether down the cylinders. I'm saying just use it as a temporary source to diagnose if it's ignition or lack of fuel causing the no start.
 
Disabling clutch switch:
Benefit:
. can start bike with one hand.
. elimitate possible problem of the swtich causing you a problem

Determent:
if forget to have in netural the bike can learch forward and you probably only have one hand on bars, your reaction will be to hold on with that one hand which could turn the bars, so are likely to fall over. And that is just with the bike learching while starter cranking, also think about if engine actually started, although not likely.

I have had problem with clutch swtich. Would have to hold cultch and press the starter button and would hear nothing but me muttering about not having kickstarter, then wiggle the clutch lever and it would start. Adjust the swtich and better for a while, and then starts happeing again. SO replaced the swtich, are available, about $20.

giganticflying said:
...... But when I apply any throttle it kills the engine. .......
Click to expand...

Runs only with choke on...? and dies when open throttle : carbs need cleaning.

Runs barley after warms up and can turn choke off slowly and dies when open throttle : carbs need cleaning.
 
Last edited:
The carbs just recently went through a full tear down, dip, and o-ring/gallery replacement. That was the first thing I did.
 
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